Makes one 8-inch cake
Ingredients
5 oz bittersweet chocolate, chopped 3/4 cup (1 1/2 sticks) unsalted butter plus extra for greasing 10 large eggs (divided use) 2/3 cup sugar (divided use) 1/4 cup Grand Marnier or other orange-flavored liqueur Confectioners’ sugar, for dusting (optional)
Directions
Preheat the oven to 375°F. Grease the…